Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/memory/CompactingPermGenGen.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/memory/CompactingPermGenGen.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,161 @@ +/* + * Copyright 2000-2005 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +package sun.jvm.hotspot.memory; + +import java.io.*; +import java.util.*; + +import sun.jvm.hotspot.debugger.*; +import sun.jvm.hotspot.runtime.*; +import sun.jvm.hotspot.types.*; + +/** This is the "generation" view of a CompactingPermGen. */ +public class CompactingPermGenGen extends OneContigSpaceCardGeneration { + private static AddressField unsharedBottomField; + private static AddressField unsharedEndField; + private static AddressField sharedBottomField; + private static AddressField sharedEndField; + private static AddressField readOnlyBottomField; + private static AddressField readOnlyEndField; + private static AddressField readWriteBottomField; + private static AddressField readWriteEndField; + private static AddressField roSpaceField; + private static AddressField rwSpaceField; + + static { + VM.registerVMInitializedObserver(new Observer() { + public void update(Observable o, Object data) { + initialize(VM.getVM().getTypeDataBase()); + } + }); + } + + private static synchronized void initialize(TypeDataBase db) { + Type type = db.lookupType("CompactingPermGenGen"); + unsharedBottomField = type.getAddressField("unshared_bottom"); + unsharedEndField = type.getAddressField("unshared_end"); + sharedBottomField = type.getAddressField("shared_bottom"); + sharedEndField = type.getAddressField("shared_end"); + readOnlyBottomField = type.getAddressField("readonly_bottom"); + readOnlyEndField = type.getAddressField("readonly_end"); + readWriteBottomField = type.getAddressField("readwrite_bottom"); + readWriteEndField = type.getAddressField("readwrite_end"); + roSpaceField = type.getAddressField("_ro_space"); + rwSpaceField = type.getAddressField("_rw_space"); + } + + public boolean isSharingEnabled() { + return VM.getVM().isSharingEnabled(); + } + + // NEEDS_CLEANUP + public CompactingPermGenGen(Address addr) { + super(addr); + } + + public OffsetTableContigSpace roSpace() { + return newOffsetTableContigSpace(roSpaceField.getValue(addr)); + } + + public OffsetTableContigSpace rwSpace() { + return newOffsetTableContigSpace(rwSpaceField.getValue(addr)); + } + + public String name() { + return "compacting permanent generation"; + } + + public static Address unsharedBottom() { + return unsharedBottomField.getValue(); + } + + public static Address unsharedEnd() { + return unsharedEndField.getValue(); + } + + public static Address sharedBottom() { + return sharedBottomField.getValue(); + } + + public static Address sharedEnd() { + return sharedEndField.getValue(); + } + + public static Address readOnlyBottom() { + return readOnlyBottomField.getValue(); + } + + public static Address readOnlyEnd() { + return readOnlyEndField.getValue(); + } + + public static Address readWriteBottom() { + return readWriteBottomField.getValue(); + } + + public static Address readWriteEnd() { + return readWriteEndField.getValue(); + } + + public static boolean isShared(Address p) { + return sharedBottom().lessThanOrEqual(p) && sharedEnd().greaterThan(p); + } + + public static boolean isSharedReadOnly(Address p) { + return readOnlyBottom().lessThanOrEqual(p) && readOnlyEnd().greaterThan(p); + } + + public static boolean isSharedReadWrite(Address p) { + return readWriteBottom().lessThanOrEqual(p) && readWriteEnd().greaterThan(p); + } + + public boolean isIn(Address p) { + return unsharedBottom().lessThanOrEqual(p) && sharedEnd().greaterThan(p); + } + + public void spaceIterate(SpaceClosure blk, boolean usedOnly) { + super.spaceIterate(blk, usedOnly); + if (isSharingEnabled()) { + blk.doSpace(roSpace()); + blk.doSpace(rwSpace()); + } + } + + public void printOn(PrintStream tty) { + tty.print(" perm"); + theSpace().printOn(tty); + if (isSharingEnabled()) { + tty.print(" ro space: "); + roSpace().printOn(tty); + tty.print(", rw space: "); + rwSpace().printOn(tty); + } + } + + private OffsetTableContigSpace newOffsetTableContigSpace(Address addr) { + return (OffsetTableContigSpace) VMObjectFactory.newObject( + OffsetTableContigSpace.class, addr); + } +}